JP2012056676A - High-place working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-place working vehicle in which operation forms of a work table are easily comprehensible to even an unfamiliar worker.SOLUTION: The high-place working vehicle includes: a boom 7 having the work table 11 at the tip thereof; a first drive part (an extending and contracting cylinder or an extending and contracting valve 17) for extending and contracting the boom 7; and a second drive part (a raising/lowering cylinder 9 or a raising/lowering valve 19) for raising/lowering the boom 7 and has: such a first operation lever 33 that the first drive part is controlled and the boom 7 is extended by a first tilting operation and the first drive part is controlled and the boom 7 is contracted by a second tilting operation; and a such second operation lever 35 that the second drive part is controlled and the boom 7 is raised by the first tilting operation and the first drive part and the second drive part are controlled and the work table 11 provided to the boom 7 is vertically lowered by a second tilting operation.

Description

  The present invention relates to an aerial work vehicle, and more particularly to movement control of a work table in an aerial work vehicle.

  Conventionally, as an aerial work vehicle, an aerial work vehicle having a boom mounted in a undulating and telescopic manner on a swivel provided so as to be able to swivel with respect to a chassis, and the work table is provided at the tip of the boom There are known devices that adjust the position of the work table by operating the swivel, turning the boom, and extending and retracting the boom by operating means provided on the work table. In such an aerial work vehicle, a limit work range that does not produce a limit load that is allowed for the boom is determined in advance, and operations exceeding this range are restricted. Therefore, for example, when the raising / lowering operation is gradually performed while the boom is extended in a state where the working table is at a predetermined height, the working table exceeds the limit working range, and further raising / lowering operation cannot be performed. There was a thing.

  Therefore, for example, in Patent Document 1, the boom is raised and lowered when it receives a raising and lowering signal from the raising and lowering operation means, and when the work table reaches the work limit range during this operation, the work table is raised and lowered. An aerial work vehicle is disclosed that controls a boom to descend vertically from operation.

  According to the aerial work vehicle described in Patent Document 1, it is possible to operate the work vehicle so that the work table can be lowered without exceeding the work limit range only by raising and lowering the hoisting operation means. it can.

Japanese Utility Model Laid-Open No. 5-19298 (Claim 1, paragraphs 0009 to 0012)

  However, such an aerial work vehicle changes to a vertical lowering operation from the middle although it should be raising and lowering the boom. For workers unaccustomed to handling, it is difficult to understand the operation mode (relationship between the user's operation and the operation of the boom).

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an aerial work vehicle in which the operation mode of a work table is easy to understand even for an unfamiliar worker.

  The first aspect of the present invention includes a boom having a work table provided at a tip thereof, a first drive unit that causes the boom to extend and contract, and a second drive unit that causes the boom to move up and down. A first operating rod in which the first driving unit is controlled by the tilting operation to extend the boom, and a first operating rod in which the first driving unit is controlled by the second tilting operation and the boom is contracted; The second drive unit is controlled by the tilting operation to activate the boom, and the first drive unit and the second drive unit are controlled by the second tilting operation to provide a work table provided on the boom. And a second operating rod that moves vertically downward.

  According to a second aspect of the present invention, there is provided a boom having a work table provided at a tip thereof, a first drive unit that causes the boom to extend and contract, and a second drive unit that causes the boom to move up and down. A first operating rod in which the first driving unit is controlled by the tilting operation to extend the boom, and a first operating rod in which the first driving unit is controlled by the second tilting operation and the boom is contracted; The first driving unit and the second driving unit are controlled by the tilting operation, and the work table provided on the boom moves up vertically, and the first driving unit and the second driving are performed by the second tilting operation. And a work table provided on the boom having a second control rod that is vertically lowered.

  According to a third aspect of the present invention, there is provided a boom having a workbench provided at a tip thereof, a first drive unit that causes the boom to extend and contract, and a second drive unit that causes the boom to move up and down. A first operating rod in which the first driving unit is controlled by the tilting operation to extend the boom, and a first operating rod in which the first driving unit is controlled by the second tilting operation and the boom is contracted; The second drive unit is controlled by the tilting operation and the boom is started up to the maximum angle, and then the first drive unit is controlled to extend the boom, and the first drive is performed by the second tilting operation. The work table provided on the boom is controlled to have a second operating rod that is vertically lowered.

  According to a fourth aspect of the present invention, when the second operating rod is tilted and operated in a second direction, when the boom is fully contracted during the vertical lowering operation, the second operating rod is The drive unit is controlled to cause the boom to bend down.

  In the fifth aspect of the present invention, when the second operating rod is tilted for the first time, when the boom is fully extended during the vertical raising operation of the work table, the second operating rod is The drive unit is controlled and the boom is activated.

  According to the first aspect of the present invention, the work table can be vertically lowered by a simple operation of the second tilting operation with respect to the second operation rod, so that an unfamiliar operator can understand the operation mode of the work table. Cheap.

  According to the second aspect of the invention, in addition to the effect of the first aspect, the work table can be raised (vertically) by a simple operation of the first tilting operation with respect to the second operating rod, which is unfamiliar. It is easy for the operator to understand the operation mode of the work table.

  According to the third aspect of the invention, in addition to the effect of the first aspect, the work table reaches the maximum lift by a simple operation of the first tilting operation with respect to the second operating rod. The “first tilting operation” by the scissors is associated with an operation mode of “raising the work table”.

  According to the fourth aspect of the present invention, even when the boom is in the minimum contraction state during the vertical descent, the descent proceeds due to the boom lying down, so that the “second tilting operation” is “the descent of the work table”. Is associated with the operation mode.

  According to the invention described in claim 5, since the work table reaches the maximum lift by such a simple operation, the “first tilting operation” by the second operation rod is an operation of “raising the work table”. Corresponding to the mode.

It is a side view of an aerial work vehicle according to an embodiment of the present invention. It is a schematic diagram of the operation part in the aerial work vehicle which concerns on one embodiment of this invention. It is a schematic block diagram of the control system in the aerial work vehicle which concerns on one embodiment of this invention. It is a schematic diagram which shows the operation | movement aspect in the aerial work vehicle which concerns on one embodiment of this invention. It is a schematic diagram which shows the operation | movement aspect in the aerial work vehicle which concerns on one embodiment of this invention. It is a schematic diagram which shows the operation | movement aspect in the aerial work vehicle which concerns on one embodiment of this invention. It is a schematic diagram of the operation part in the aerial work vehicle which concerns on other embodiment of this invention. It is a schematic diagram which shows the operation | movement aspect in the aerial work vehicle which concerns on other embodiment of this invention. It is a schematic diagram which shows the operation | movement aspect in the aerial work vehicle which concerns on other embodiment of this invention.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. For the sake of convenience, the same reference numerals are given to the portions having the same operational effects, and the description thereof is omitted.

Embodiment 1 FIG.
1 to 6 show an embodiment according to the present invention. FIG. 1 is a side view of an aerial work vehicle. The aerial work vehicle 1 has front wheels 3F, 3F and rear wheels 3R, 3R on a chassis 2. Above the front wheels 3F, 3F, a cab 4 for operating the aerial work vehicle 1 is operated. Is provided. The following mounts are mainly mounted behind the cab 4.

  In the vicinity of the rear end of the chassis 2, there is provided a swivel base 5 that can be swung by a swivel motor (not shown), and a boom 7 is pivotally supported on the swivel base 5 so as to be raised and lowered. A boom cylinder 9 is connected to the boom 7, and the boom 7 is raised and lowered by expanding and contracting the boom cylinder 9. In addition, the boom 7 is configured in a multi-stage manner so that it can be expanded and contracted by expanding and contracting an expansion / contraction cylinder (not shown) provided therein, and the work table 11 always maintains horizontal at the tip. It is attached so that it can swing freely. That is, the work table 11 can adjust the position in the height direction by expansion and contraction of the telescopic cylinder and the undulating cylinder 9, and can adjust the position in the horizontal direction by rotating the swivel base 5. Further, the work table 11 can be swung within a predetermined range with respect to the boom 7, and the swiveling position can be adjusted by a swing motor (not shown). Further, before and after the chassis 2, outrigger devices 6 </ b> F and 6 </ b> R that project in the vehicle width direction and jack up the chassis 2 during work are provided. The turning angle of the turntable 5, the undulation angle of the boom 7, the telescopic position of the boom 7, and the turning angle of the work table 11 are respectively provided with potentiometers 5a, 7a, 7b, 11a (see FIG. 3). ) So that the state of each part can be grasped at all times.

  Here, the telescopic cylinder, the hoisting cylinder 9, the swing motor, and the swing motor are all driven by hydraulic oil supplied from a hydraulic pump (not shown), and are telescopic valves that are electromagnetic proportional valves provided in each. The drive is controlled by controlling 17 (first drive unit), hoisting valve 19 (second drive unit), swing valve 15 and swing valve 21. The telescopic valve 17, the undulation valve 19, the swing valve 15, and the swing valve 21 can be controlled by, for example, the operation unit 30 installed on the work table 11.

  FIG. 2 schematically shows the configuration of the operation unit 30. The operation unit 30 is configured by providing at least a first operation rod 33 and a second operation rod 35 that perform movement control of the boom 7 on the operation panel 31. The first operating rod 33 and the second operating rod 35 are both cross operation levers (so-called joysticks) that can be tilted back and forth, and right and left, and the respective tilt angles of the levers 34 and 36 in the front-rear direction and the left-right direction. Is detected by a potentiometer 34a corresponding to the longitudinal direction of the lever 34, a potentiometer 34b corresponding to the lateral direction of the lever 34, a potentiometer 36a corresponding to the longitudinal direction of the lever 36, and a potentiometer 36b corresponding to the lateral direction of the lever 36, A detection signal corresponding to each tilt angle is output. The levers 34 and 36 are biased in a direction in which the tilt displacement is restored by the biasing means. When the operator's hand leaves the tilted state, the levers 34 and 36 are neutral in the original vertical state. It is configured to automatically return to the position.

  The operation panel 31 has identification information indicating the meaning of the tilting operation corresponding to the tilting directions of the first operating rod 33 and the second operating rod 35. In the illustrated example, a character “shrink” indicating that the boom 7 is contracted in the front direction of the first operating rod 33, and a character “extension” indicating that the boom 7 is extended in the rear direction, An arrow indicating that the workbench 11 swings to the left is shown in the left direction, and an arrow indicating that the workbench 11 swings to the right is written in the right direction. In the left-right direction, a character “swing” indicating that the workbench 11 swings is separately shown. In addition, a character “rising” indicating that the boom 7 is raised (standing) in the forward direction of the second operating rod 35, and a character “lower” indicating that the work table 11 is lowered in the backward direction. However, an arrow indicating that the swivel base 5 is swung to the left is indicated in the left direction, and an arrow indicating that the swivel base 5 is swung to the right is indicated in the right direction. In the left-right direction, a character “turn” indicating that the turntable 5 turns is separately shown.

  FIG. 3 shows a schematic block diagram of the control system. The output values of the potentiometers 34a, 34b, 36a, 36b provided on the first operating rod 33 and the second operating rod 35, the turning angle of the swivel base 5, the undulation angle of the boom 7, the expansion / contraction position of the boom 7, and The output values of the potentiometers 5a, 7a, 7b, and 11a that detect the turning angle of the workbench 11 are connected so as to be output to the control unit 40 including a CPU or the like. Further, the control unit 40 is connected to the swing valve 15, the undulation valve 19, the telescopic valve 17, and the swing valve 21, and is configured to output a control signal thereto. Here, the control unit 40 stores in advance a limit work range R (see, for example, FIG. 4) that does not cause a limit load that is allowed for the boom 7, and grasps it by the output values of the potentiometers 5a, 7a, 7b, and 11a. The state of the boom 7 to be stored is compared with the stored limit work range R. When the detected state of the boom 7 is about to exceed the limit work range R, the output to the swing valve 15, the hoisting valve 19, the telescopic valve 17, and the swing valve 21 is performed so that the boom 7 is not overloaded. To regulate.

  Operation control by the first operating rod 33 and the second operating rod 35 will be described. The first operating rod 33 controls expansion and contraction of the boom 7 by a tilting operation in the front-rear direction, and controls the swing (swing) of the work table 11 by a tilting operation in the left-right direction. In the illustrated example, when the first operating rod 33 is tilted to the “retracted” side in the forward direction, a detection signal corresponding to the tilt angle is output to the control unit 40 by the potentiometer 34a. As a result, the control unit 40 controls the hydraulic pressure of the expansion / contraction valve 17 to reduce the expansion cylinder according to the detection signal, and the boom 7 is reduced (boom reduction operation). Further, when the first operating rod 33 is tilted to the “extension” side in the backward direction, a detection signal corresponding to the tilt angle is output to the control unit 40 by the potentiometer 34a. Thus, the control unit 40 controls the hydraulic pressure of the telescopic valve 17 to extend the telescopic cylinder in accordance with the detection signal, and the boom 7 is expanded (boom extending operation). When the first operating rod 33 is tilted in either the left or right direction, a detection signal corresponding to the tilt angle is output to the control unit 40 by the potentiometer 34b. Thereby, in the control part 40, the working hydraulic pressure of the swing valve 21 is controlled to rotate the swing motor in accordance with the detection signal, and the work table 11 is swung.

  The second operating rod 35 controls the raising and lowering of the boom 7 by a tilting operation in the front-rear direction, and controls the turning of the turntable 5 by a tilting operation in the left-right direction. In the illustrated example, when the second operating rod 35 is tilted to the “starting” side in the forward direction, a detection signal corresponding to the tilt angle is output to the control unit 40 by the potentiometer 36a. As a result, the control unit 40 controls the hydraulic pressure of the hoisting valve 19 to extend the hoisting cylinder 9 in accordance with the detection signal, and the boom 7 is raised (boom start-up operation). Further, when the second operating rod 35 is tilted to the “down” side in the backward direction, a detection signal corresponding to the tilt angle is output to the control unit 40 by the potentiometer 36a. Accordingly, the control unit 40 controls the hydraulic pressure of the expansion / contraction valve 17 to reduce the expansion cylinder according to the detection signal, and controls the hydraulic pressure of the undulation valve 19 to reduce the undulation cylinder 9. As a result, the work table 11 is lowered in the vertical direction as shown by the arrow in FIG. 4 (vertical lowering operation of the work table). Here, FIG. 4 schematically shows the movement control of the work table 11 in the work range diagram (the same applies to FIGS. 5, 7 and 8). When the second operating rod 35 is tilted in either the left or right direction, a detection signal corresponding to the tilt angle is output to the control unit 40 by the potentiometer 36b. Thereby, in the control part 40, the hydraulic pressure of the turning valve 15 is controlled to rotate the turning motor in accordance with the detection signal, and the turntable 5 is turned.

  Thus, the work table 11 can be vertically lowered by the operation of tilting the second operating rod 35 to the “down” side, and the notation “below” of the operation panel 31 and the operation of the work table 11 being lowered. And the operation mode of the work table 11 is easy to understand even for unskilled workers.

  When the boom 7 is fully contracted during the vertical lowering, the vertical lowering cannot be further performed. In this case, the most contracted state is input from the potentiometer 7b to the control unit 40, and the control unit 40 detects that the second operation rod 35 continues to be tilted downward in the backward direction. In response to the signal, the hydraulic pressure of the hoisting valve 19 is controlled to reduce the hoisting cylinder 9, and as shown by the arrow in FIG. Descend. Also in this case, the relationship between the notation of “below” on the operation panel 31 and the operation of lowering the workbench 11 is clear, and the operation mode of the workbench 11 is easy to understand even for unskilled workers. ing. As described above, when the operator wants to move from a high place to a low place, the operator only has to tilt the second operating rod toward “down” of the operation panel 31, and the operation is simple.

  In Embodiment 1 as described above, when the work table 11 is to be moved to a parallel position as indicated by the white arrow in FIG. The work table 11 may be moved to the target position by tilting the first operating rod 33 to the “extension” side after the vertical lowering to a predetermined altitude by tilting the “operating side”. Further, the first operating rod 33 is tilted to the “extension” side to move the work table 11 to a position directly above the target position, and then the second operating rod 35 is tilted to the “down” side. It may be lowered vertically to the target position. Thus, in this embodiment, the work table 11 can be rationally moved to a desired position.

Embodiment 2. FIG.
As another embodiment of the present invention, FIGS. 7 and 8 show an example in which the control of the boom 7 by the forward tilting operation of the second operating rod 35 in the first embodiment is different. Note that parts that are the same as or correspond to those in the first embodiment are denoted by the same reference numerals as in FIGS. 1 to 6, and different configurations from the first embodiment will be mainly described.

  As shown in FIG. 7, the operation panel 131 of the operation unit 130 corresponding to the operation unit 30 in the first embodiment corresponds to the tilt directions of the first operation rod 133 and the second operation rod 135. The identification information indicating the meaning of the tilt is described. In the example shown in the drawing, the letter “shrink” indicating that the boom 7 is contracted in the forward direction of the first operating rod 133, and the letter “extension” indicating that the boom 7 is extended in the backward direction are An arrow indicating that the workbench 11 swings to the left is indicated in the direction, and an arrow indicating that the workbench 11 swings to the right is indicated in the right direction. In the left-right direction, a character “swing” indicating that the workbench 11 swings is separately shown. In addition, a character “up” indicating that the workbench 11 is raised in the forward direction of the second operating rod 135 and a character “lower” indicating that the workbench 11 is lowered in the backward direction are displayed on the left. An arrow indicating that the swivel base 5 is swung to the left is indicated in the direction, and an arrow indicating that the swivel base 5 is swung to the right is indicated in the right direction. In the left-right direction, a character “turn” indicating that the turntable 5 turns is separately shown.

  The control by the first operating rod 133 is the same as that of the first operating rod 33 in the first embodiment, and the description thereof is omitted. The second operating rod 135 controls the vertical rise and fall of the boom 7 by a tilting operation in the front-rear direction, and controls the turning of the turntable 5 by a tilting operation in the left-right direction. Since the tilting operation in the left-right direction is the same as that in the first embodiment, the description thereof is omitted. In the illustrated example, when the second operating rod 135 is tilted to the “up” side in the forward direction, a detection signal corresponding to the tilt angle is output to the control unit 40 by the potentiometer 36a. Thus, the control unit 40 controls the hydraulic pressure of the telescopic valve 17 to extend the telescopic cylinder according to the detection signal, and controls the hydraulic pressure of the hoisting valve 19 to extend the hoisting boom 9. As a result, as shown by an arrow in FIG. 8, the work table 11 is raised in the vertical direction (vertical raising operation of the work table). Further, when the second operating rod 135 is tilted to the “down” side in the backward direction, a detection signal corresponding to the tilt angle is output to the control unit 40 by the potentiometer 36b. Accordingly, the control unit 40 controls the hydraulic pressure of the expansion / contraction valve 17 to reduce the expansion cylinder according to the detection signal, and controls the hydraulic pressure of the undulation valve 19 to reduce the undulation cylinder 9. As a result, the work table 11 is lowered in the vertical direction (vertical lowering operation of the work table).

  As described above, the work table 11 can be vertically raised by the operation of tilting the second operation rod 135 to the “up” side, and the operation can be performed by the operation of tilting the second operation rod 135 to the “down” side. Since the platform 11 can be vertically lowered, the relationship between the notation “up” and “down” on the operation panel and the operation of the work platform 11 “rising” and “falling” is clear, and the work is not familiar. It is easy for the person to understand the operation mode of the work table 11.

  If the boom 7 is fully extended during the vertical ascent, the vertical ascent cannot be further performed. In this case, it is input from the potentiometers 7a and 7b to the control unit 40 that it is in the maximum extension state and not in the maximum elevation state, and the second operating rod 135 is tilted to the “up” side in the forward direction. If the control is continued, the hydraulic pressure of the hoisting valve 19 is controlled to extend the hoisting cylinder 9 in accordance with the detection signal, and the boom 7 is lifted (boom start-up operation), whereby the work table 11 is operated. Rises. Also in this case, the relationship between the notation “above” on the operation panel and the operation of raising the workbench 11 is clear, and the operation mode of the workbench 11 is easy to understand even for unskilled workers. Yes. As described above, whether the operator wants to move from a high place to a low place or to move from a low place to a high place, the operator only has to tilt the second operating rod in one direction, and the operation is simple. It has become.

Embodiment 3 FIG.
FIG. 9 shows another example of the present invention in which the boom control by the forward tilting operation of the second operating rod in the second embodiment is different. Note that parts that are the same as or correspond to those in the first and second embodiments are denoted by the same reference numerals as those in FIGS. 1 to 7, and the configuration different from the first and second embodiments will be mainly described.

  Since the configuration of the operation panel 131 (see FIG. 8) and the control by the first operating rod 133 are the same as those in the second embodiment, description thereof is omitted. The second operating rod 135 controls the vertical rise and fall of the boom 7 by a tilting operation in the front-rear direction, and controls the turning of the turntable 5 by a tilting operation in the left-right direction. Note that the tilting operation in the left-right direction is the same as in the first and second embodiments, and a description thereof will be omitted. In the example shown in FIG. 9, when the second operating rod 135 is tilted to the “up” side in the forward direction, the potentiometer 36 a outputs a detection signal corresponding to the tilt angle to the control unit 40. As a result, the control unit 40 controls the hydraulic pressure of the hoisting valve 19 to extend the hoisting cylinder 9 in accordance with the detection signal, thereby raising the boom 7 (boom starting operation). When the hoisting cylinder 9 is fully extended (maximum rising state), the boom 7 is extended by controlling the hydraulic pressure of the expansion / contraction valve 17 to extend the expansion cylinder ( Boom extension operation). As a result, when the second operating rod 135 is continuously tilted to the “up” side, the workbench 11 is raised to the maximum ground clearance. Further, when the second operating rod 135 is tilted to the “down” side in the backward direction, a detection signal corresponding to the tilt angle is output to the control unit 40 by the potentiometer 36b. Accordingly, the control unit 40 controls the hydraulic pressure of the expansion / contraction valve 17 to reduce the expansion cylinder according to the detection signal, and controls the hydraulic pressure of the undulation valve 19 to reduce the undulation cylinder 9. As a result, the work table 11 is lowered in the vertical direction (vertical lowering operation of the work table).

  In this way, the work table 11 can be raised to the maximum ground level by the operation of tilting the second operating rod 135 to the “up” side, and the second operating rod 135 is tilted to the “down” side. Since the work table 11 can be lowered to the ground by the operation, the relationship between the notation of “up” and “down” on the operation panel 131 and the operation of the work table 11 “up” and “down” is clear. In addition, the operation mode of the work table 11 is easy to understand even for unskilled workers. As described above, whether the operator wants to move from a high place to a low place or to move from a low place to a high place, the operator only has to tilt the second operating rod in one direction, and the operation is simple. It has become.

  As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the scope of the present invention. Is included in the present invention. For example, an example in which a potentiometer is used to detect the angle of each part has been described. However, the present invention is not limited to this, and any configuration may be used as long as the calibration can accurately detect the angle of each part. .

  In addition, although the example of “upper” or “lower” is shown as the identification information indicating the meaning of the tilting of the second operation rod in the front-rear direction on the operation panel, it is not limited to this, and for example, instead of “upper” “Up”, “Rise”, “UP”, etc. may be used, and “Down”, “Descent”, “DOWN”, etc. may be used instead of “Down”. As described above, there is no particular limitation as long as it is clear whether the current position moves upward or downward.

1 Working vehicle at high altitude 7 Boom 9 Hoisting cylinder (second drive unit)
11 Working table 17 Telescopic valve (first drive unit)
19 Undulating valve (second drive unit)
33 First operation rod 35 Second operation rod

Claims (5)

A boom provided with a workbench at the tip, a first drive unit for extending and retracting the boom, and a second drive unit for raising and lowering the boom,
A first operating rod in which the first drive unit is controlled by the first tilting operation and the boom is extended; and the first driving unit is controlled by the second tilting operation and the boom is contracted;
The second driving unit is controlled by the first tilting operation and the boom is activated, and the first driving unit and the second driving unit are controlled by the second tilting operation and the work is provided on the boom. An aerial work vehicle characterized in that the platform has a second operating rod that vertically moves down. A boom provided with a workbench at the tip, a first drive unit for extending and retracting the boom, and a second drive unit for raising and lowering the boom,
A first operating rod in which the first drive unit is controlled by the first tilting operation and the boom is extended; and the first driving unit is controlled by the second tilting operation and the boom is contracted;
The first driving unit and the second driving unit are controlled by the first tilting operation, and the work table provided on the boom moves vertically, and the first driving unit and the second driving unit are operated by the second tilting operation. An aerial work vehicle comprising: a second operating rod in which a driving table is controlled and a work table provided on the boom is vertically lowered. A boom provided with a workbench at the tip, a first drive unit for extending and retracting the boom, and a second drive unit for raising and lowering the boom,
A first operating rod in which the first drive unit is controlled by the first tilting operation and the boom is extended; and the first driving unit is controlled by the second tilting operation and the boom is contracted;
After the second drive unit is controlled by the first tilting operation and the boom is activated to the maximum angle, the first drive unit is controlled to extend the boom, and the first tilting operation causes the first drive unit to extend. An aerial work vehicle comprising: a second operating rod in which a work table provided on the boom is controlled to move vertically downward by controlling the drive unit and the second drive unit.   When the second operating rod is tilted for the second time and the boom is fully contracted while the work table is vertically lowered, the second drive unit is controlled and the boom is lowered. The aerial work vehicle according to any one of claims 1 to 3, wherein the work vehicle operates. When the second operating rod is tilted for the first time and the boom is fully extended while the workbench is moving up vertically, the second drive unit is controlled to start the boom. The aerial work vehicle according to claim 2, which operates.

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